ludic/docs/language/list/list-reverse.md

id	name	category	kind	tokens	sig	tip	order	ns	member
list-reverse	List.reverse	list	namespace-method	List.reverse	List.reverse(s) -> void	Reverse the order of a slice in place.	9	List	reverse

Reverses s so its first element becomes last and vice versa, mutating the slice in place rather than returning a copy. Use it to flip an order you built back-to-front — a path traced from goal to start, an undo stack you want oldest-first, or a list you appended to and now want to read in the opposite direction.

Parameters:

• s — the slice to reverse

program PathOrder {
  state PathOrderState {
    path: []int = new []int
  }

  handler Finalize(path_order_st: PathOrderState) phase Update {
    # path was built from the goal back to the start
    List.reverse(path_order_st.path)   # now start -> goal
  }
}